Improving the efficiency of the stabilization columns in oil and gas processing

Rectification process is widely used in oil and gas processing and petrochemistry. The composition of the bottom product of the rectification column usually differs from the equilibrium composition due to significantly higher content of light components or fractions. This stipulates a necessity to include into the technological schemes of several oil refining processes a stabilization unit that are meant to ensure separation of gases and liquid products. A highly relevant task is to explore new possibilities for improving the stabilization process. The aim of the present work was to improve the stabilization process by changing the operating pressure. It was found that increasing the pressure in the stabilization column enhanced the sharpness of separation of butanes from pentanes, which resulted in improving the quality of the products. The experimental-industrial runs confirmed the possibility of increasing the efficiency of stabilization columns in various processes by increasing the pressure within acceptable limits. © 2019 WIT PressACKNOWLEDGEMENT This research was supported by Act 211 Government of the Russian Federation, contract № 02.A03.21.0006

Marketing Audit of a Company

Tato diplomová práce se zabývá provedením marketingového auditu společnosti Tungaloy Rus se zvláštním zaměřením na spokojenost jejích pracovníků. V teoretické části diplomové práce se vymezuje pojem a význam marketingového auditu, a taktéž podstata spokojenosti pracovníků a moderní přístupy k jejímu měření. V analytické části diplomové práce se provádí marketingový audit společnosti Tungaloy Rus a průzkum spokojenosti jejích pracovníků. V návrhové části diplomové práce se na základě zjištěných informací navrhují doporučení ke zlepšení současného stavu marketingové činnosti společnosti.The master‘s thesis deals with marketing auditing of company Tungaloy Rus with a special focus on its employees’ satisfaction. The theoretical part of the thesis defines the meaning and importance of marketing audit, as well as the concept of employees’ satisfaction and modern approaches to its measurement. The analytical part of the thesis focuses on performing the marketing audit of company Tungaloy Rus and surveying the satisfaction of its employees. The proposal part of the thesis aims to making a set of recommendations based on the results of the marketing audit and the satisfaction research, which leads to improving the company's marketing activities.

When Skanderbeg Meets Clinton: Cultural Landscape and Commemorative Strategies in Postwar Kosovo

The paper is devoted to studying current strategies in the transformation of cultural landscape in postwar Kosovo. I regard cultural landscape, i.e. a piece of Earth’s surface deliberately shaped by man, as an extension of the so-called socially constructed reality (Berger and Luckmann, 1966). In some cases this symbolization is a strategic part of a nation-building project, or just a way to declare one’s own presence, identity, or affiliation. The creation of new heroes is one of the initial steps within the strategies of a nation-building process, as it forms an essential prerequisite for the feeling of a common and shared history. This article analyses the spectrum of personalities symbolically welcomed in Kosovo since the 1990s. The Republic of Kosovo is de jure a multiethnic society consisting of Albanian, Serbian, and other communities, and is presented as such to the international community. However, the current strategies of symbolic nation-building deeply contradict the declared aspirations to build a common state and national identity among all of the peoples living in Kosovo. My aim is to negotiate the strategies of memorialization in postwar Kosovo with a focus on this balancing between civic (as desired) and ethnic (as de facto realized) models of nation-building. The data for the study were collected during several fieldwork trips in Kosovo (2010-2014)

Multiple Voices of the Past: (Hi)stories and Memories from the Ethnically Mixed Neighbourhoods in Pristina

Multiple Voices of the Past: (Hi)stories and Memories from the Ethnically Mixed Neighbourhoods in Pristina Using the Bakhtinian term heteroglossia developed by Andrea L. Smith, this article analyses the multiple and sometimes internally contradictory narratives, memories and stereotypes articulated in everyday talk about the common past in Pristina that could be heard nowadays in post-war Kosovo (mostly among Kosovo Albanians) and among the people who used to live in Kosovo prior to 1999 (mostly Kosovo Serbs) and then left the country for Serbia (Belgrade, Niš, etc.) or went abroad. The study explores the existing memories, images and stereotypes shared among the current and former citizens of Pristina (Kosovo) – both Albanians and Serbs – about each other and their city. It relies on the basic tools of cultural memory studies and applies them to the analysis of existing local narratives in the present-day Albanian and Serbian communities that used to be parts of one and the same city of Pristina. The article offers a discussion of the opposition between urban and rural models of mindset in changing Pristina and its importance in understanding some of the factors of ethnic conflict in Kosovo. The basic social unit selected for analysis is ethnically mixed neighbourhood and its memory due to the fact that this social and spatial entity functioned as the primary condition and source of interaction, mutual familiarity and cooperation both during peace and war. The empirical data for the study were collected in 2010–2020 during short visits to Pristina (Kosovo) and Niš (Serbia).   Множественные голоса прошлого: история и память в этнически смешанных районах Приштины Аннотация: Используя термин гетероглоссия, предложенный М. Бахтиным и разработанный А. Смитом, в данной статье я про- анализирую многочисленные и иногда внутренне противоречивые нарративы, воспоминания и стереотипы, сформулированные в повседневных разговорах об общем прошлом в Приштине, которые сегодня можно услышать в послевоенном Косово (в среде косовских албанцев) и среди людей, живших в Косово до 1999 г. (в основном косовские сербы), а затем уехавших из страны в Сербию (Белград, Ниш и т. д.) или за границу. Моя статья направлена на изучение существующих воспоминаний, образов и стереотипов, разделяемых нынешними и бывшими гражданами Приштины – как албанцами, так и сербами – по отношению друг к другу и своему городу. В работе используются основные инструменты исследования культурной памяти, в их применении к анализу существующих местных нарративов в современных албанских и сербских общинах, которые когда-то были частью одного и того же города Приштина. В своей статье я буду обсуждать противостояние между городской и сельской моделями мышления в изменении Приштины и его важность для понимания некоторых предпосылок этнического конфликта в Косово. В качестве базовой социальной единицы для своего анализа я выбрал этнически смешанный район и его память в связи с тем, что эта социальная и пространственная сущность функционировала как основное условие и источник взаимодействия, взаимного знакомства и сотрудничества как в периоды мира, так и во время войны. Эмпирические данные были собраны в 2010-2020 годах во время моих коротких визитов в Приштину и Ниш.   > Różnorodne głosy przeszłości: historia i pamięć w zróżnicowanych etnicznie dzielnicach Prisztiny Odwołując się do terminu polifoniczności, zaproponowanego przez Michaiła Bachtina i opracowanego przez Anthony’ego Smitha, w niniejszym artykule przeanalizuję liczne i czasem wewnętrznie sprzeczne narracje, wspomnienia i stereotypy, sformułowane w codziennych rozmowach o wspólnej przeszłości w Prisztinie, które dziś można usłyszeć w powojennym Kosowie (w środowisku kosowskich Albańczyków) oraz pośród ludzi mieszkających w Kosowie do 1999 roku (przede wszystkim wśród kosowskich Serbów), którzy wyjechali do Serbii (Belgrad, Nisz itd.) lub za granicę. Mój artykuł ma na celu zbadanie wspomnień, obrazów i stereotypów, podzielanych przez obecnych i byłych obywateli Prisztiny, zarówno Albańczyków jak i Serbów, w stosunku do siebie nawzajem oraz do samego miasta. W pracy nad analizą lokalnych narracji we współczesnych wspólnotach albańskich i serbskich, które kiedyś były częścią tego samego miasta – Prisztiny, wykorzystuję podstawowe instrumenty badawcze dla dziedziny pamięci kulturowej. W artykule będę omawiać sprzeczność między miejskim a wiejskim modelem myślenia na temat przemian Prisztiny, akcentując jego istotną rolę w rozumieniu niektórych przesłanek konfliktu etnicznego w Kosowie. Jako podstawową jednostkę społeczną dla mojej analizy przyjąłem etnicznie różnorodną dzielnicę wraz z jej pamięcią, ze względu na to, że ta społeczna i przestrzenna jednostka funkcjonowała jako podstawowe źródło wzajemnych wpływów, znajomości i współpracy, zarówno w czasie pokoju, jak i wojny. Dane empiryczne zostały zebrane w latach 2010-2020 w czasie moich krótkich wizyt w Prisztinie i Niszu

Hydrogeological model from hydrochemical and geocryologic records on the Cape Lamb of Vega Island, northern Antarctic Peninsula

The rapid changes that are taking place in the climate of the Antarctic Peninsula are triggering hydrological processes which had been limited or inactive for relatively long periods of time. These processes are evident in ice-free areas on the northern edge of the Antarctic Peninsula, such as Cape Lamb, and lead to intense draining of the surface and groundwater system throughout the brief Antarctic summer. The result is a movement of large amounts of water, sediments and nutrients that would be immobilized in other scenarios. This study proposes a model of the operation of the surface and groundwater system that could be valid for several ice-free areas in the region, based on the interpretation of field observations in Cape Lamb, the most extensive ice-free area on Vega Island. The model proposed is further supported by the interpretation of 56 chemical analyses of samples representing groundwater, active layer water, glacier ice and snowfall. The hydrochemical interpretation is supported primarily by four indicators (pH, electrical conductivity, D/18O ratio and SO4/Cl ratio) which have proven to be the most appropriate hydrochemical variables to differentiate the origin and interaction of the waters in the various sections of the system

A novel integrated methodology for screening, assessment and ranking of promising oilfields for polymer floods

Due to the deterioration of the structure of oil reserves, the demand for enhanced oil recovery technologies is increasing every year. These technologies are usually classified into the following: Chemical, gas, thermal and combined enhance oil recovery methods. Among the chemical methods, polymer flooding stands out. It has been actively studied since the middle of the last century and currently numbers hundreds of completed projects around the world. Despite the relatively long study period and the number of publications dedicated to polymer flooding, there is still a range of aspects requiring research and development as well as field testing. One of the crucial issues at the preparation stage of a polymer flooding project is necessity to select oilfield or pilot area to achieve the best possible technological and economic efficiency results. This article provides analysis of the key factors influencing effectiveness of polymer flooding implementation. The paper reflects historical evolution, i.e. expansion of the technology applicability limits. Their current values have been verified, based on the analysis of the experience of implementing the technology in extreme conditions. Applicability criteria has been established as well for the polymer flooding development. The paper includes development of a uniquely designed integrated methodology for screening, assessment and ranking of promising objects for the technology implementation. The methodology is designed on the basis of a background review of completed projects, as well as on the expertise of the specialists involved in the development and scientific support of chemical enhanced oil recovery projects implementation. The purpose of the methodology is to create a basic universal tool for an express assessment of the prospects for using polymer flooding in different fields, which a wide range of specialists in the oil and gas industry could apply.Document Type: Original articleCited as: Podoprigora, D. G., Byazrov, R. R., Lagutina, M. A., Arabov, D. V., Galimov V. V., Ermolin D. S. A novel integrated methodology for screening, assessment and ranking of promising oilfields for polymer floods. Advances in Geo-Energy Research, 2024, 12(1): 8-21. https://doi.org/10.46690/ager.2024.04.0

НАДЕЖНОСТЬ СТАРЕЮЩИХ АВТОМАТИЗИРОВАННЫХ СИСТЕМ

The authors put forward a technique of stationarization of the failure flow intended for calculating reliability rates of aging objects of transportation and communication networks. They propose to substitute a stationarization of a real non-stationary failure flow for a stationary one with a parameter ƛc , chosen on the basis of some additional considerations, and study two possible approaches to solve the problem.Предлагается методика стационаризации потока отказов, предназначенная для расчета показателей надежности стареющих объектов транспорта и телекоммуникационных сетей. Рассматриваются два возможных подхода к решению поставленной задачи. Их оценку подкрепляют приближенные к практике частные случаи

The mask as an element of the culture of everyday life during a pandemic

Рассмотрено символическое значение медицинских масок в разные исторические периоды. Особое внимание уделяется периодам эпидемии чумы XIV–XV вв. и пандемии COVID-19. Делается вывод о том, что маска становится важным элементом культуры повседневности.The article discusses the symbolic meaning of medical masks in different historical periods. Particular attention is paid to the periods of the plague epidemic of the XIV–XV centuries and the COVID-19 pandemic. It is concluded that the mask is becoming an important element of the culture of everyday life

Sex-Related Features of Haemodynamic Response to Cold Exposure of the Hand in Young People

Studying the effects of hypothermia on the human body is a pressing issue for modern physiology and practical medicine. The purpose of this article was to establish sex-related features of the haemodynamic response to local cold exposure of the hand in young people. Materials and methods. The research involved apparently healthy young men (n = 27) and women (n = 30) aged 18–20 years, born and permanently living in the Arctic zone of the Russian Federation. The stress test included immersion of the hand in 8 °C water for 1 min. It took 25 min to fully recover after cold exposure. The temperature of 24 °C served as the baseline. Haemodynamic parameters were recorded using SIMONA 111 Integrated Monitoring System (Russia). The following were determined: myocardial contractility indices, heart rate, pulsatility index (a marker of peripheral vascular resistance) as well as integral indicators reflecting the overall level of functional capabilities of the circulatory system. Results. Short-term cold exposure of the hand was found to cause a negative inotropic (decreased myocardial contractility) and a negative chronotropic (decreased heart rate) effects. At the same time, an increase in the body’s functional reserves was detected. The analysis of haemodynamic parameters showed differences in the response of the circulatory system between the examined groups of young men and women. The effect of local cooling of the hand on the cardiovascular system was more pronounced in women than in men. In addition, responses of different groups of haemodynamic parameters were identified: while in men changes occurred primarily due to lowered peripheral vascular resistance and increased blood pressure, in women they were caused by a decrease in contractility indices and myocardial parameters